Risk factors for developing avascular necrosis include: Trauma. Injuries, such as hip dislocation or fracture, can damage nearby blood vessels and reduce blood flow to bones. Steroid use. High-dose use of corticosteroids, such as prednisone, is the most common cause of avascular necrosis that isn't related to trauma.
Blue Panther Jr. Blue Panther Jr. is the ring name of a Mexican luchador enmascarado, or masked professional wrestler, formerly known as Black Panther. He is working for the Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) portraying a tecnico (Good guy) wrestling character.
Melanism is the result of a dominant allele and remains relatively rare in jaguars. A black panther is the melanistic color variant of any Panthera species. Black panthers in Asia and Africa are leopards (Panthera pardus) and black panthers in the Americas are black jaguars (Panthera onca).